EP2713305A1 - Procédé et appareil d'écriture/de lecture pour la configuration d'un appareil d'écriture/de lecture dans un agencement RFID - Google Patents

Procédé et appareil d'écriture/de lecture pour la configuration d'un appareil d'écriture/de lecture dans un agencement RFID Download PDF

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Publication number
EP2713305A1
EP2713305A1 EP12186214.8A EP12186214A EP2713305A1 EP 2713305 A1 EP2713305 A1 EP 2713305A1 EP 12186214 A EP12186214 A EP 12186214A EP 2713305 A1 EP2713305 A1 EP 2713305A1
Authority
EP
European Patent Office
Prior art keywords
read
write
rfid
write devices
devices
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12186214.8A
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German (de)
English (en)
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EP2713305B1 (fr
Inventor
Dieter Horst
Jörg Dr. Neidig
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Siemens AG
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Siemens AG
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Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP12186214.8A priority Critical patent/EP2713305B1/fr
Priority to US14/035,411 priority patent/US20140085058A1/en
Priority to CN201310451564.2A priority patent/CN103701500B/zh
Publication of EP2713305A1 publication Critical patent/EP2713305A1/fr
Application granted granted Critical
Publication of EP2713305B1 publication Critical patent/EP2713305B1/fr
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
    • G06K7/10356—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers using a plurality of antennas, e.g. configurations including means to resolve interference between the plurality of antennas
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10198—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves setting parameters for the interrogator, e.g. programming parameters and operating modes
    • G06K7/10227—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves setting parameters for the interrogator, e.g. programming parameters and operating modes loading programming parameters or programs into the interrogator, e.g. for configuring the interrogator

Definitions

  • the invention relates to a method for configuring a read / write device in an RFID arrangement according to the preamble of patent claim 1, and a read / write device for an RFID arrangement according to the preamble of patent claim 12.
  • Read / write devices for RFID arrangements in particular those operating in the region around 900 MHz (UHF range), essentially have 2 communication interfaces, namely on the one hand a system interface to a host computer (programmable logic controller, personal computer or other parent system), and an "air interface" for communication with RFID transponders.
  • the read / write devices are usually designed in such a way that they execute commands from a host computer, whereby they communicate with the RFID transponders via the air interface and exchange corresponding payload data.
  • a programming device or the like can be connected to the same data network. be connected, which accesses the operating parameters (parameter sets or configuration file) alternately or even simultaneously and allows a user to set the values of the operating parameters as desired.
  • the object is to simplify the configuration of read / write devices in RFID arrangements, and in particular to reduce or save the facilities required for the configuration devices.
  • a method for configuring a read / write device in a RFID arrangement is provided with at least two read / write devices, wherein for configuration in at least one of the read / write devices at least one operating parameter is adjusted, and wherein between the at least two read / write devices, a direct exchange of related to the configuration messages ,
  • the respectively used for communication of the read / write devices with RFID transponders wireless interfaces and provided for communication with RFID transponders communication methods and communication protocols are used to exchange the messages, at least one of the read / write devices compared to another of Read / write devices simulate an RFID transponder.
  • Such a method allows read / write devices to be configured in a coordinated manner without the need for communication via the host interfaces and without the need for separate hardware devices or separate data connections between the read / write devices.
  • those read / write devices can be configured in a network with each other, which have no host interface or are not connected to a data network (eg stand-alone devices).
  • a read / write device for an RFID device is proposed, wherein the read / write device for exchanging on a configuration of a read / write device related messages with a another read / write device of the RFID device is set up.
  • the read / write device for exchanging the messages by means of a set up for communication with RFID transponders wireless interface using the provided for communication with RFID transponders communication method and communication protocols is set, the read / write device for simulating a RFID transponder over the other of the read / write devices is formed.
  • the messages exchanged for the configuration relate to the RFID transponders detected at a location or by one of the read / write devices and the radio parameters measured during their detection, in particular reception field strength (RSSI value), read rate, etc
  • RSSI value reception field strength
  • this data can be used to decide on changes in operating parameters or for other settings, wherein advantageously for comparison, locally obtained data can be used via the locally received transponders.
  • RSSI value reception field strength
  • This makes it possible, for example, to entrust the read / write device for processing the data of a detected transponder in which the transponder was received with the best quality.
  • the read / write devices detect the emissions of adjacent read / write devices and use the detected or measured radio parameters, ie, for example, the reception quality or field strengths, etc., in order to achieve optimum radio coverage of the overall arrangement by suitable adaptation of the transmission powers, radio channels, time slots, etc.
  • one of the read / write devices in the radio network can be determined as a "master" for controlling or configuring the other read / write devices.
  • This "master" function can also take over occasionally another of the read / write devices; In particular, hierarchies or algorithms are conceivable which allow a "negotiation" of the master functionality.
  • each read / write device can also determine or optimize its own radio parameters on the basis of the data which it detects itself and on the basis of data which the read / write device receives from adjacent read / write devices.
  • an information or list can be administered about it, in which adjacent read / write devices a transmission, for example a detection signal ("inventory"), must be receivable with which minimum and / or maximum strength.
  • a read / write device can also determine operating parameters for other read / write devices of the network, transmit them to it and thus determine the behavior of neighboring radio cells.
  • Suitable operating parameters to be adapted are, for example, a maximum or a currently (future) transmission power to be used, a radio channel to be used or to be blocked, an input sensitivity of the receiving electronics or timing parameters to be used.
  • Other operating parameters may specify in more detail the communication protocol to be used, as regards both the protocol used to read and write the RFID transponders for operational use and the RFID communication protocol to be used for communication with other read / write devices.
  • Further operating parameters to be adapted may relate to filter parameters for the selection or rejection of detected RFID transponders. This means that, for example By means of the messages, it is determined which of the read / write devices "processes" which RFID transponders, whereby groups or identification number ranges can also be specified.
  • Another advantageous application arises when read / write devices continue to register the detected transponders via the radio interface to adjacent read / write devices, where the information about the detection of these transponders and possibly recorded user data (payload) is further processed or transmitted via a host computer. Interface to be reported to an application. It is possible, for example, to integrate such RFID read / write devices in an industrial arrangement that do not have their own host interface or in which the connection to a network infrastructure is difficult or impossible.
  • the identification numbers of the detected transponder and the possibly existing data information (payload) can also be advantageously reported the identification number or other information on the capturing read / write device, so that, for example, conclusions can be drawn on the location of detection.
  • the read / write devices communicate by means of the modulated backscatter ("backscattering") with each other, wherein Depending on the "direction" of the message transmission, the role of that read / write device which simulates an RFID transponder can change.
  • backscattering modulated backscatter
  • FIG. 1 schematically four read / write devices R1, R2, R3, R4 are shown, each having a transmit and receive path TX, RX and are equipped with a signal processor DSP.
  • an RFID transponder TR is shown in the figure. Both the RFID transponder TR and the read / write devices R1, R2, R3, R4 have unique identification numbers, in the example the RFID transponder TR has the identification number ID_088897.
  • the read / write devices R1, R2, R3, R4 can both detect the RFID transponder TR and exchange data with it, as well as with each other by means of the same air interfaces (antennas, receiving circuits, etc.) can exchange messages or data.
  • a query message ("Inventory") of a Read / write device R1, R2, R3, R4 not only the transponder TR by means of modulated backscatter (backscattering) answer, but also the other read / write devices R1, R2, R3, R4.
  • ID's also useful content can be transmitted, so for example in the transponder TR, the content of a data store, and in the other read / write devices R1, R2, R3, R4 any message.
  • the read / write devices R1, R2, R3, R4 are distributed in an industrial environment in order to cover a larger radio area without gaps.
  • the transmission power of each read / write device should be set so high that a radiated from this read / write modulated carrier wave is still to be received with a minimum receive field strength in all other read / write devices R1, R2, R3, R4.
  • the transmission power of each read / write device R1, R2, R3, R4 should be set as low as possible in order to exclude mutual interference.
  • each of the read / write devices R1, R2, R3, R4 in each case start a transmission marked as "test signal", the other read / write devices R1, R2, R3, R4 not only "backscattering" their respective identification number (backscattering). but also a value for the locally measured reception field strength of the radio signal emitted by the first-mentioned read / write device R1, R2, R3, R4.
  • the identification numbers of the responding read / write devices R1, R2, R3, R4 and the associated field strength values for the reception field strengths thus represent messages which are transmitted via the air interface of the first-mentioned read / write device R1, R2, R3, R4 are received, after which this data can be evaluated locally and used to adjust the transmission power.
  • This procedure can be carried out successively by all read / write devices R1, R2, R3, R4, which leads to a simple but coordinated configuration of operating parameters (here: transmission power) of the devices involved.
  • transmission power In addition to the transmission power are of course numerous other operating parameters adjustable, wherein also in the individual read / write devices R1, R2, R3, R4 different algorithms for different operating requirements for determining the operating parameters based on the received messages can be used.
  • a read / write device R1, R2, R3, R4 can also send an instruction to another of the devices go with this second device proposed or prescribed a parameter adjustment.
  • FIG. 2 schematically a representation of two read / write devices R1, R2, an RFID transponder TR and a personal computer with an application AW is shown.
  • the application AW is, for example, an industrial control program which has to be informed about detected RFID transponders TR.
  • the personal computer with the application AW is connected to a host interface of the read / write device R2, for example via a USB interface or a network connection.
  • the read / write device R1 starts a new "Inventory", wherein in the modulated carrier wave signaling is included that there is a message for the read / write device R2.
  • This transmission is received by the read / write device R2 and demodulated, after which this device switches to a "response mode" and analogous to an RFID transponder, so in a simulation mode, the read / write device R1 reports its presence.
  • the read / write device R1 Analogous to the method by which a read / write device transmits data to a user memory of an RFID transponder, the read / write device R1 now transmits the serial number and the user data content of the RFID RFID transponders TR, a time information about the detection time and statistical data (such as signal / noise ratio, timing parameters, field strengths), which were registered in the detection of the RFID transponder TR.
  • This information is, depending on the requirements in a specific application, reported by the read / write device R2 to the application AW.
  • the detection of the RFID transponder TR is reported in the same way as if the read / write device R2 had detected this transponder TR itself.
  • additional information can also be transmitted, in addition to the above-mentioned values, in particular also that the transponder TR was not detected at the location or the radio area of the read / write device R2, but rather from the read / write device R1 or at Location of the local radio area.
  • a comparison can take place in the read / write device R2 on which location or in which read / write device R1, R2 the transponder TR was recorded with the "better" reception characteristics. Then, for example, as the location information on the probable location of the transponder TR that radio cell or that read / write device R1, R2 are specified, in which the "better" reception properties were applied. In a case in which both read / write devices R1, R2 have a host interface, it can also be determined by means of a respective comparison which of the read / write devices R1, R2 further processes or processes the detected transponder TR.
  • the read / write device R1, R2, in which the transponder TR was detected first is responsible for the further communication with this transponder TR.
  • a corresponding message provided with the identification number ID_088897 from the read / write device R1 to the read / write device R2 would then lead to the read / write device R2 subsequently ignoring said transponder TR.
  • the information about detected or ignored RFID transponders apply as well as operating parameters, as well as the aforementioned settings for transmission power, timing, radio channels, communication protocols, etc.
  • FIG. 3 again an arrangement of two read / write devices R1, R2 is shown, wherein the read / write device R1 is connected to an administrator workstation ADM.
  • a data record with configuration information that is to say with operating parameters, is transmitted to the read / write device R1, which transmits these operating parameters via the air interface to the second read / write device R2 by the already mentioned methods and protocols from RFID communication technology, according to which these operating parameters are applied there.
  • the read / write devices R1, R2 can also match their operating parameters without having to use an administrator workstation ADM.
  • a channel assignment is determined with the neighboring devices, which safely leads to the trouble-free operation of the RFID arrangement.
  • a central workstation or a "host” can be informed, if, for example, due to a small distance of the devices to each other or due to overreach a trouble-free operation is not possible.
  • the measurement results of the individual read / write devices R1, R2, R3, R4 during the "test transmissions" and also in productive operation can also be made available to a user, for example by means of an integrated web server.
  • Another area of application is the targeted avoidance of overreach. Especially in the industrial environment, it can come to overreach due to high density of read / write devices R1, R2, R3, R4. RFID transponders TR that are outside the desired detection range are nevertheless detected as a result of the overreach and lead to disruptions or even damage in a production process. If data about the correct acquisitions of a read / write device preceding the production process are transmitted via the air interface to the following read / write devices R1, R2, R3, R4, a list of the expected transponders TR can be established.
  • That of the read / write devices R1, R2, R3, R4, which recognizes the best quality (RSSI value, stable detection, etc.) in the communication with the relevant transponder TR, is at least in the sense of the radio path closest to the relevant transponder TR.
  • the participating read / write devices R1, R2, R3, R4 can thus determine whether or not the transponder TR is an "overreach".
  • a third important application has already been described in terms of the transfer of operating parameters from one read / write device to another and may also be referred to as "reader cloning". This once established and confirmed operating parameters can be easily copied from one device to another, especially if the different reading points are constructed similar.

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EP12186214.8A 2012-09-27 2012-09-27 Procédé et appareil d'écriture/de lecture pour la configuration d'un appareil d'écriture/de lecture dans un agencement RFID Not-in-force EP2713305B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP12186214.8A EP2713305B1 (fr) 2012-09-27 2012-09-27 Procédé et appareil d'écriture/de lecture pour la configuration d'un appareil d'écriture/de lecture dans un agencement RFID
US14/035,411 US20140085058A1 (en) 2012-09-27 2013-09-24 Method and read/write unit for configuring a read/write unit in a radio frequency identification (rfid) arrangement
CN201310451564.2A CN103701500B (zh) 2012-09-27 2013-09-27 用于配置在rfid装置中的读/写设备的方法以及读/写设备

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Application Number Priority Date Filing Date Title
EP12186214.8A EP2713305B1 (fr) 2012-09-27 2012-09-27 Procédé et appareil d'écriture/de lecture pour la configuration d'un appareil d'écriture/de lecture dans un agencement RFID

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EP2713305A1 true EP2713305A1 (fr) 2014-04-02
EP2713305B1 EP2713305B1 (fr) 2017-08-02

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US (1) US20140085058A1 (fr)
EP (1) EP2713305B1 (fr)
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3971764A1 (fr) * 2020-09-17 2022-03-23 Siemens Aktiengesellschaft Procédé de détection des données de transpondeurs rfid dans un dispositif rfid à l'aide d'une pluralité de dispositifs d'écriture / de lecture

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3290948B1 (fr) * 2016-08-31 2020-03-25 Siemens Aktiengesellschaft Capteur et systeme de determination de position
KR102288610B1 (ko) * 2017-12-19 2021-08-10 삼성전자주식회사 무선 주파수 세팅 시스템 및 이동 단말기
EP3945449A1 (fr) * 2020-07-27 2022-02-02 Nxp B.V. Transpondeur rfid doté de réglages modifiables

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US20070046467A1 (en) 2005-08-31 2007-03-01 Sayan Chakraborty System and method for RFID reader to reader communication
US20110037573A1 (en) * 2009-08-11 2011-02-17 Samsung Electronics Co. Ltd. Apparatus and method for providing information of goods in mobile terminal

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US7548153B2 (en) * 2004-07-09 2009-06-16 Tc License Ltd. Multi-protocol or multi-command RFID system
US7378967B2 (en) * 2004-09-09 2008-05-27 The Gillette Company RFID tag sensitivity
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US20070046467A1 (en) 2005-08-31 2007-03-01 Sayan Chakraborty System and method for RFID reader to reader communication
US20110037573A1 (en) * 2009-08-11 2011-02-17 Samsung Electronics Co. Ltd. Apparatus and method for providing information of goods in mobile terminal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3971764A1 (fr) * 2020-09-17 2022-03-23 Siemens Aktiengesellschaft Procédé de détection des données de transpondeurs rfid dans un dispositif rfid à l'aide d'une pluralité de dispositifs d'écriture / de lecture

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CN103701500A (zh) 2014-04-02
US20140085058A1 (en) 2014-03-27
EP2713305B1 (fr) 2017-08-02
CN103701500B (zh) 2017-03-01

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